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Proceedings Paper

Compact absolute shaft angular encoder based on diffractive optical elements
Author(s): Victor Pavlovich Bessmeltsev; V. L. Goldin; E. M. Kurbatov; Alexander G. Poleshchuk; Andrey G. Sedukhin; V. V. Vileiko
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Paper Abstract

A compact absolute shaft angular encoder with resolution of 5 arc seconds (18 bits) has been developed. It has the direct readout channel with 14-bit optical code disk and the interpolation channel for obtaining the additional 4 low-order bits by means of analog-to-digital conversion and processing of the quadrature signals from the interpolation track of the code disk. The small sizes of the encoder are achieved by employing special components. Among them are a multiple beam illuminator with diffractive Dammann grating, specialized electronics used for digital data reading and processing and implemented on the base of integrated linear photodetector array, and also a microcontroller with RISC-processor and programmable device.

Paper Details

Date Published: 29 July 2002
PDF: 5 pages
Proc. SPIE 4900, Seventh International Symposium on Laser Metrology Applied to Science, Industry, and Everyday Life, (29 July 2002); doi: 10.1117/12.484483
Show Author Affiliations
Victor Pavlovich Bessmeltsev, Institute of Automation and Electrometry (Russia)
V. L. Goldin, Scientific Industrial Corp. of Applied Mechanics (Russia)
E. M. Kurbatov, Scientific Industrial Corp. of Applied Mechanics (Russia)
Alexander G. Poleshchuk, Institute of Automation and Electrometry (Russia)
Andrey G. Sedukhin, Institute of Automation and Electrometry (Russia)
V. V. Vileiko, Institute of Automation and Electrometry (Russia)


Published in SPIE Proceedings Vol. 4900:
Seventh International Symposium on Laser Metrology Applied to Science, Industry, and Everyday Life
Yuri V. Chugui; Sergei N. Bagayev; Albert Weckenmann; P. Herbert Osanna, Editor(s)

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